羧甲基淀粉-g-聚乙烯吡咯烷酮的合成及其对罗丹明 6G 和氨的吸附性能。
Synthesis of carboxymethyl starch-g-polyvinylpyrolidones and their properties for the adsorption of Rhodamine 6G and ammonia.
机构信息
State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, PR China.
State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, PR China.
出版信息
Carbohydr Polym. 2018 Apr 15;186:150-158. doi: 10.1016/j.carbpol.2018.01.052.
Carboxymethyl starch-g-polyvinylpyrolidones (CMS-g-PVPs) were prepared by grafting of carboxymethyl starch (CMS) with N-vinylpyrolidone (NVP) using different initiators. The grafting percentage of all the modified starches was determined and the modified starch (CMS-g-PVP-5) with maximum grafting percentage was characterized by elemental analysis, H NMR and FT-IR spectroscopy. Crystallinity and thermal properties of CMS-g-PVP-5 were analysed by XRD and TGA, respectively. CMS-g-PVP-5 was then utilized for the adsorption of Rhodamine 6G (dye) from water under different pH, temperature, adsorbate doze and adsorbent concentration. This modified starch showed good adsorption ability towards Rhodamine 6G. CMS-g-PVP-5 was also applied for the adsorption of ammonia gas and proved an exciting adsorbent for ammonia.
羧甲基淀粉-g-聚乙烯吡咯烷酮（CMS-g-PVPs）是通过用不同的引发剂接枝羧甲基淀粉（CMS）和 N-乙烯基吡咯烷酮（NVP）制备的。所有改性淀粉的接枝率都进行了测定，接枝率最高的改性淀粉（CMS-g-PVP-5）用元素分析、1H NMR 和傅里叶变换红外光谱进行了表征。CMS-g-PVP-5 的结晶度和热性能分别通过 XRD 和 TGA 进行了分析。然后，在不同的 pH 值、温度、吸附剂剂量和吸附剂浓度下，将改性淀粉 CMS-g-PVP-5 用于水中罗丹明 6G（染料）的吸附。这种改性淀粉对罗丹明 6G 具有良好的吸附能力。CMS-g-PVP-5 还用于氨气的吸附，证明是一种令人兴奋的氨气吸附剂。
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